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| Mirrors > Home > MPE Home > Th. List > copab | Structured version Visualization version Unicode version | ||
| Description: Extend class notation to include ordered-pair class abstraction (class builder). |
| Ref | Expression |
|---|---|
| wph |
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| vx |
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| vy |
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| Ref | Expression |
|---|---|
| copab |
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| Colors of variables: wff setvar class |
| Copyright terms: Public domain | W3C validator |